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The influence of heat treatment on the microstructure and mechanical properties of the Mg-7Sn-1Si magnesium alloy

  • Silesian University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of precipitation hardening on the microstructure and mechanical properties of the Mg-7Sn-1Si alloy is reported. It was found that the microstructure of the Mg-7Sn-1Si alloy consists of a-Mg solid solution, Mg2Sn and Mg2Si compounds. The solution heat-treatment of the tested alloy at 520 °C for 24 h causes the Mg2Sn phase to dissolve in the a-Mg matrix and spheroidization of the Chinese script Mg2Si compound. Rod-shaped and polygonal precipitates of equilibrium Mg2Sn phase were found in the microstructure after ageing treatment at 200 and 250 °C. The peak hardness is around 58 HV after 120 h at 250 °C and the hardness increment is about 22 HV. The tensile strength of the peak aged alloy is about 120 MPa. The creep rate of the Mg-7Sn-1Si alloy is of order 10−9 at a stress of 30 MPa and temperatures of 200 and 250 °C.

Original languageEnglish
Title of host publicationProperties and Characterization of Modern Materials
EditorsAndreas Öchsner, Holm Altenbach
PublisherSpringer Verlag
Pages231-244
Number of pages14
ISBN (Print)9789811016011
DOIs
Publication statusPublished - 2017
Event9th International Conference on Advanced Computational Engineering and Experimenting, ACE-X 2015 - Munich, Germany
Duration: 29 Jun 20152 Jul 2015

Publication series

NameAdvanced Structured Materials
Volume33
ISSN (Print)1869-8433
ISSN (Electronic)1869-8441

Conference

Conference9th International Conference on Advanced Computational Engineering and Experimenting, ACE-X 2015
Country/TerritoryGermany
CityMunich
Period29/06/152/07/15

Keywords

  • Magnesium alloys
  • Mg–Sn alloys
  • Microstructure
  • Precipitation hardening

ASJC Scopus subject areas

  • General Materials Science

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